package collection1;

import sun.plugin2.applet.context.NoopExecutionContext;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionOperDemo {
    public static void main(String[] args) {
        Collection c1 = new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add(".net");
        System.out.println("c1:"+c1);//c1:[java,c++,.net]

        Collection c2 = new ArrayList();
        c2.add("android");
        c2.add("ios");
        c2.add("java");
        System.out.println("c2:"+c2);//c2:[android,ios,java]

        c1.addAll(c2);
        System.out.println("c1:"+c1);//c1:[java,c++,.net,android,ios,java]
        System.out.println("c2:"+c2);//c2:[android,ios,java]

        Collection c3 = new ArrayList();
        c3.add("c++");
        c3.add("android");
        c3.add("php");
        System.out.println("c3:"+c3);

        boolean contains = c1.containsAll(c3);//判断c1中是否包含c3中的所有元素

        System.out.println("是否包含："+contains);
/*
        //取交集：c1中仅保留与c3所共有的元素，而c3不变
        c1.retainAll(c3);
        System.out.println("c1:"+c1);//c1:[c++,android]
        System.out.println("c3:"+c3);//c3:[c++,android,php]
*/
        //删交集：将c1中与c3共有的元素删除,c3不变
        c1.removeAll(c3);
        System.out.println("c1:"+c1);//c1:[java,.net,ios,java]
        System.out.println("c3:"+c3);//c3:[c++,android,php]




    }
}
